The type of fibers specialized to continue contracting for extended periods of time,as would be required in running a marathon,for example,are _____ fibers.
A)fast
B)slow
C)intermediate
D)fast and intermediate
E)slow and intermediate

Question

Quizplus · Accepted Answer

Slow fibers, also known as type I fibers, are specialized for endurance activities and can continue contracting for extended periods of time, making them ideal for activities such as running a marathon. Fast fibers, also known as type II fibers, are specialized for short bursts of intense activity and tire quickly. Intermediate fibers have properties of both slow and fast fibers.

The Type of Fibers Specialized to Continue Contracting for Extended